How light interacts with living matter. Light activates three key processes of life: photosynthesis, vision and photoperiodism (the response of plants and animals to the cycle of night and day). Such activation is mediated by specific pigments.
D000818:Animals; D008027:Light; D010507:Periodicity; D010788:Photosynthesis; D010860:Pigments, Biological; D014785:Vision, Ocular
D010860:Pigments, Biological